package com.lv.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.lv.common.R;
import com.lv.pojo.Employee;
import com.lv.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;

import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * @Author:晓风残月Lx
 * @Date: 2022/5/2 8:32
 */

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    EmployeeService employeeService;

    /**
     * 员工登录
     * @param employee
     * @param request
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(@RequestBody Employee employee, HttpServletRequest request) {
        // 1.将页面提交的密码password进行MD5加密
        String password=employee.getPassword();
        password=DigestUtils.md5DigestAsHex(password.getBytes());

       // 2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询到 则返回登陆失败
        if(emp == null){
            return R.error("登陆失败");
        }

        //4.密码比对
        if(!password.equals(emp.getPassword())){
            return R.error("密码或用户名错误");
        }

        //5.查看员工状态，如果已禁用，则返回员工已禁用的结果
        if(emp.getStatus()==0){
            return R.error("账号已禁用");
        }

        //6.登陆成功，将用户id存入session并返回登陆成功
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        // 清除sessionId
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }


    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee,HttpServletRequest request){
        log.info("新增员工,员工信息:{}",employee.toString());

        // 设置初始密码 123456 MD5
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        // 获得当前创建用户的id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(
            int page,
            int pageSize,
            String name
    ){
        log.info("page = {},pageSize={},name={}",page,pageSize,name);

        // 构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        // 构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper<>();
        // 添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping()
    public R<String> update (@RequestBody Employee employee,HttpServletRequest request){

        log.info(employee.toString());
        long id = Thread.currentThread().getId();
        log.info("线程id为：{}",id);

        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据员工id查找
     * @param id
     * @return
     */
     @GetMapping("/{id}")
     public R<Employee> getById( @PathVariable Long id){
        log.info("根据id查询员工信息");
         Employee employee = employeeService.getById(id);
         if(employee!=null){
             return R.success(employee);
         }
        return R.error("没有查询到对应员工");
     }

}
